- converts a vector of data from one primitive type to another
cxErrorCode cxVecCoerce(long n, cxPrimType typei, void *datain, cxPrimType typeo, void *dataout)
integer function cxVecCoerce(n, typei, datain, typeo, dataout)
integer typei, typeo
integer datain(*), dataout(*)
- Input length of the data vector.
- Input enumerated constant indicating the type of the input vector.
- Input vector of n elements of primitive type specified by typei.
- Input enumerated constant indicating the type of the output vector.
- Output vector of n elements of primitive type specified by typeo. The vector is assumed to be previously allocated by the caller.
The returned value for this function is a cxErrorCode enumerated constant indicating success (cx_err_none or 0) or failure (other values).
copies n values from datain to dataout, performing a scalar type coercion on each value. Values within the normal range of the output type are converted to the output type, while values outside the range are clamped to the minimum or maximum of the range, as required. cxVecCoerce
does not allocate storage for the output vector, but rather expects dataout to be an array of at least n words. Arguments datain and dataout are arrays of the scalar types indicated in the typei and typeo variables, based on the cxPrimType enumeration. Possible scalar types are unsigned byte integer, signed short integer, signed long integer, single precision floating point, double precision floating point, and null-terminated (C style) character string. cxVecCoerce
is used by the Module Data Wrapper in array coercions, but may also be used in writing modules.
Last modified: Mon Nov 6 16:33:52 GMT 2000
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© The Numerical Algorithms Group Ltd, Oxford UK. 1999